279 lines
9.8 KiB
Java
279 lines
9.8 KiB
Java
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package net.minecraftforge.fluids;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import net.minecraftforge.common.MinecraftForge;
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import net.minecraftforge.event.Event;
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/**
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* Register simple items that contain fluids here. Useful for buckets, bottles, and things that have
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* ID/metadata mappings.
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*
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* For more complex items, use {@link IFluidContainerItem} instead.
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*
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* @author King Lemming
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*
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*/
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public abstract class FluidContainerRegistry
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{
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private static Map<List, FluidContainerData> containerFluidMap = new HashMap();
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private static Map<List, FluidContainerData> filledContainerMap = new HashMap();
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private static Set<List> emptyContainers = new HashSet();
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public static final int BUCKET_VOLUME = 1000;
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public static final ItemStack EMPTY_BUCKET = new ItemStack(Item.bucketEmpty);
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public static final ItemStack EMPTY_BOTTLE = new ItemStack(Item.glassBottle);
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private static final ItemStack NULL_EMPTYCONTAINER = new ItemStack(Item.bucketEmpty);
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static
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{
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registerFluidContainer(FluidRegistry.WATER, new ItemStack(Item.bucketWater), EMPTY_BUCKET);
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registerFluidContainer(FluidRegistry.LAVA, new ItemStack(Item.bucketLava), EMPTY_BUCKET);
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registerFluidContainer(FluidRegistry.WATER, new ItemStack(Item.potion), EMPTY_BOTTLE);
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}
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private FluidContainerRegistry(){}
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/**
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* Register a new fluid containing item.
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*
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* @param stack
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* FluidStack containing the type and amount of the fluid stored in the item.
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* @param filledContainer
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* ItemStack representing the container when it is full.
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* @param emptyContainer
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* ItemStack representing the container when it is empty.
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* @return True if container was successfully registered; false if it already is.
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*/
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public static boolean registerFluidContainer(FluidStack stack, ItemStack filledContainer, ItemStack emptyContainer)
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{
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return registerFluidContainer(new FluidContainerData(stack, filledContainer, emptyContainer));
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}
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/**
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* Register a new fluid containing item. The item is assumed to hold 1000 mB of fluid. Also
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* registers the Fluid if possible.
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*
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* @param fluid
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* Fluid type that is stored in the item.
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* @param filledContainer
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* ItemStack representing the container when it is full.
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* @param emptyContainer
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* ItemStack representing the container when it is empty.
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* @return True if container was successfully registered; false if it already is.
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*/
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public static boolean registerFluidContainer(Fluid fluid, ItemStack filledContainer, ItemStack emptyContainer)
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{
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if (!FluidRegistry.isFluidRegistered(fluid))
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{
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FluidRegistry.registerFluid(fluid);
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}
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return registerFluidContainer(new FluidStack(fluid, BUCKET_VOLUME), filledContainer, emptyContainer);
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}
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/**
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* Register a new fluid containing item that does not have an empty container.
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*
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* @param stack
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* FluidStack containing the type and amount of the fluid stored in the item.
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* @param filledContainer
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* ItemStack representing the container when it is full.
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* @return True if container was successfully registered; false if it already is.
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*/
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public static boolean registerFluidContainer(FluidStack stack, ItemStack filledContainer)
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{
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return registerFluidContainer(new FluidContainerData(stack, filledContainer, null, true));
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}
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/**
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* Register a new fluid containing item that does not have an empty container. The item is
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* assumed to hold 1000 mB of fluid. Also registers the Fluid if possible.
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*
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* @param fluid
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* Fluid type that is stored in the item.
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* @param filledContainer
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* ItemStack representing the container when it is full.
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* @return True if container was successfully registered; false if it already is.
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*/
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public static boolean registerFluidContainer(Fluid fluid, ItemStack filledContainer)
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{
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if (!FluidRegistry.isFluidRegistered(fluid))
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{
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FluidRegistry.registerFluid(fluid);
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}
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return registerFluidContainer(new FluidStack(fluid, BUCKET_VOLUME), filledContainer);
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}
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/**
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* Register a new fluid containing item.
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*
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* @param data
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* See {@link FluidContainerData}.
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* @return True if container was successfully registered; false if it already is.
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*/
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public static boolean registerFluidContainer(FluidContainerData data)
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{
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if (isFilledContainer(data.filledContainer))
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{
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return false;
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}
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containerFluidMap.put(Arrays.asList(data.filledContainer.itemID, data.filledContainer.getItemDamage()), data);
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if (data.emptyContainer != null && data.emptyContainer != NULL_EMPTYCONTAINER)
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{
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filledContainerMap.put(Arrays.asList(data.emptyContainer.itemID, data.emptyContainer.getItemDamage(), data.fluid.fluidID), data);
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emptyContainers.add(Arrays.asList(data.emptyContainer.itemID, data.emptyContainer.getItemDamage()));
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}
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MinecraftForge.EVENT_BUS.post(new FluidContainerRegisterEvent(data));
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return true;
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}
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/**
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* Determines the fluid type and amount inside a container.
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*
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* @param container
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* The fluid container.
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* @return FluidStack representing stored fluid.
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*/
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public static FluidStack getFluidForFilledItem(ItemStack container)
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{
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if (container == null)
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{
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return null;
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}
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FluidContainerData data = containerFluidMap.get(Arrays.asList(container.itemID, container.getItemDamage()));
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return data == null ? null : data.fluid.copy();
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}
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/**
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* Attempts to fill an empty container with a fluid.
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*
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* NOTE: Returns null on fail, NOT the empty container.
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*
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* @param fluid
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* FluidStack containing the type and amount of fluid to fill.
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* @param container
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* ItemStack representing the empty container.
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* @return Filled container if successful, otherwise null.
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*/
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public static ItemStack fillFluidContainer(FluidStack fluid, ItemStack container)
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{
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if (container == null || fluid == null)
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{
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return null;
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}
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FluidContainerData data = filledContainerMap.get(Arrays.asList(container.itemID, container.getItemDamage(), fluid.fluidID));
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if (data != null && fluid.amount >= data.fluid.amount)
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{
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return data.filledContainer.copy();
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}
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return null;
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}
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/**
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* Determines if a container holds a specific fluid.
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*/
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public static boolean containsFluid(ItemStack container, FluidStack fluid)
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{
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if (container == null || fluid == null)
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{
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return false;
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}
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FluidContainerData data = filledContainerMap.get(Arrays.asList(container.itemID, container.getItemDamage(), fluid.fluidID));
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return data == null ? false : data.fluid.isFluidEqual(fluid);
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}
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public static boolean isBucket(ItemStack container)
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{
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if (container == null)
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{
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return false;
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}
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if (container.isItemEqual(EMPTY_BUCKET))
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{
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return true;
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}
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FluidContainerData data = containerFluidMap.get(Arrays.asList(container.itemID, container.getItemDamage()));
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return data != null && data.emptyContainer.isItemEqual(EMPTY_BUCKET);
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}
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public static boolean isContainer(ItemStack container)
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{
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return isEmptyContainer(container) || isFilledContainer(container);
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}
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public static boolean isEmptyContainer(ItemStack container)
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{
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return container != null && emptyContainers.contains(Arrays.asList(container.itemID, container.getItemDamage()));
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}
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public static boolean isFilledContainer(ItemStack container)
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{
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return container != null && getFluidForFilledItem(container) != null;
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}
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public static FluidContainerData[] getRegisteredFluidContainerData()
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{
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return containerFluidMap.values().toArray(new FluidContainerData[containerFluidMap.size()]);
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}
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/**
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* Wrapper class for the registry entries. Ensures that none of the attempted registrations
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* contain null references unless permitted.
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*/
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public static class FluidContainerData
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{
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public final FluidStack fluid;
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public final ItemStack filledContainer;
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public final ItemStack emptyContainer;
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public FluidContainerData(FluidStack stack, ItemStack filledContainer, ItemStack emptyContainer)
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{
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this(stack, filledContainer, emptyContainer, false);
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}
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public FluidContainerData(FluidStack stack, ItemStack filledContainer, ItemStack emptyContainer, boolean nullEmpty)
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{
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this.fluid = stack;
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this.filledContainer = filledContainer;
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this.emptyContainer = emptyContainer == null ? NULL_EMPTYCONTAINER : emptyContainer;
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if (stack == null || filledContainer == null || emptyContainer == null && !nullEmpty)
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{
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throw new RuntimeException("Invalid FluidContainerData - a parameter was null.");
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}
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}
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public FluidContainerData copy()
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{
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return new FluidContainerData(fluid, filledContainer, emptyContainer, true);
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}
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}
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public static class FluidContainerRegisterEvent extends Event
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{
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public final FluidContainerData data;
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public FluidContainerRegisterEvent(FluidContainerData data)
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{
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this.data = data.copy();
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}
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}
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}
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